package tech.topcoder.springcloud.simpleweb.controller;

import javax.servlet.http.HttpServletRequest;
import java.util.LinkedHashMap;

/**
 * Created by hhj on 16-12-16.
 */
public abstract class BaseController {

    protected LinkedHashMap<String, Object> result(int errno, String errmsg) {
        LinkedHashMap<String, Object> obj = new LinkedHashMap<String, Object>();
        obj.put("errno", errno);
        obj.put("errmsg", errmsg);
        return obj;
    }

    protected LinkedHashMap<String, Object> result(int errno, String errmsg, Object data) {
        LinkedHashMap<String, Object> obj = new LinkedHashMap<String, Object>();
        obj.put("errno", errno);
        obj.put("errmsg", errmsg);
        obj.put("data", data);
        return obj;
    }

    public String getIpAddr(HttpServletRequest request) {
        String ip = request.getHeader("x-forwarded-for");
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
            ip = request.getHeader("Proxy-Client-IP");
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
            ip = request.getHeader("WL-Proxy-Client-IP");
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
            ip = request.getRemoteAddr();
        // 对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
        if (ip != null && ip.length() > 15) { // "***.***.***.***".length() = 15
            if (ip.indexOf(",") > 0) {
                ip = ip.substring(0, ip.indexOf(","));
            }
        }
        return ip;
    }
}
